EP4179233A1 - Betätigungsvorrichtung für ein automatisiertes schaltgetriebe - Google Patents
Betätigungsvorrichtung für ein automatisiertes schaltgetriebeInfo
- Publication number
- EP4179233A1 EP4179233A1 EP21742781.4A EP21742781A EP4179233A1 EP 4179233 A1 EP4179233 A1 EP 4179233A1 EP 21742781 A EP21742781 A EP 21742781A EP 4179233 A1 EP4179233 A1 EP 4179233A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding device
- piston
- housing
- actuating device
- rotation element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0204—Selector apparatus for automatic transmissions with means for range selection and manual shifting, e.g. range selector with tiptronic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
- F16H63/20—Multiple final output mechanisms being moved by a single common final actuating mechanism with preselection and subsequent movement of each final output mechanism by movement of the final actuating mechanism in two different ways, e.g. guided by a shift gate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
Definitions
- the invention relates to an actuating device for an automated manual transmission of a motor vehicle, by means of which a selector or shifting element of the manual transmission can be moved to set a shift gate or to engage or disengage a gear
- the actuating device having a fluid-operated actuator with a piston and a has a piston rod that can be connected to the selector or shift element of the manual transmission, the piston being arranged in a radially sealed manner in a cylindrical receiving space of the housing of the actuating device and being able to move coaxially there, a sensor arrangement having a magnet and a sensor sensitive to a magnetic field being present, and the magnet by means of a holding device remote from the piston rod on the front side of the piston and the sensor is arranged on the housing side radially opposite the magnet.
- DE 102005034865 A1 discloses an actuating device for a motor vehicle transmission.
- This actuating device has at least one movable actuating element, the position of which is detected by at least one sensor, with a code track being present which has sections with different heights which are designed to be scanned by the sensor. It is provided here that the sections of the code track are arranged at least two-dimensionally with different heights. The sections of the code track with different heights are preferably scanned by a sensor without contact. Such complete mechanical decoupling is advantageous under certain environmental conditions, such as large temperature fluctuations or strong vibrations.
- the at least one sensor can be a Hall sensor which interacts with a magnet in a contactless manner.
- DE 102016012862 A1 discloses a switching module for an automated manual transmission, which has a box-like module carrier in which an electronic control unit is arranged.
- a plurality of shift rods are arranged so as to be axially movable parallel to a bottom wall of the module carrier that faces the interior of the transmission.
- a shift fork is fastened to each shift rod.
- the shift rods are each in operative connection with a moving part of a Wegzylin OFFENDERS.
- magnetic field-sensitive position sensors with a position sensor on the shift rod side and a position sensor fixed to the housing in order to record the shift positions of the associated shift rods.
- the position sensor is attached to the shift fork head at a small distance from the bottom wall of the module carrier.
- the position sensor is protected within the module carrier in the range of movement of the position sensor on the inside of the bottom wall of the module carrier.
- the invention is based on the object of presenting a generic actuating device with an actuator in the form of a piston-cylinder arrangement, which has a magnet on its movable actuating element, which as part of a sensor arrangement for determining the position of the actuating element or for determining the position of the actuating element actuated transmission element is used. It should be ensured here that the actuating element can move coaxially to the longitudinal center axis of the actuator and can rotate about this longitudinal center axis, but rotation of the magnet about this longitudinal center axis should be prevented.
- the invention relates to an actuating device for an automated manual transmission of a motor vehicle, by means of which a selector or shifting element of the manual transmission can be moved to set a shift gate or to engage or disengage a transmission gear, the actuating device having a fluid-operated actuator with a piston and one with the Selector or shifting element of the manual transmission has a piston rod that can be connected, the piston being arranged in a radially sealed manner in a cylindrical receiving space of the housing of the actuating device and being movable there coaxially, a sensor arrangement having a magnet and a sensor sensitive to a magnetic field being present, and the magnet being activated by means of a Holding device remote from the piston rod on the front side of the piston and the sensor are arranged on the housing side radially opposite the magnet.
- the holding device is connected to the piston so that it can rotate about the longitudinal central axis of the receiving space, that the holding device has a hollow-cylindrical or hollow-cylindrical-segment-shaped geometry, that there is a rod-shaped or plate-shaped anti-rotation element, which at least with its two ends in is received in a form-fitting manner in an allocated recess in the housing, and that the anti-rotation element engages through the hollow-cylindrical or hollow-cylindrical-segment-shaped holding device at a distance from the magnet with little play in a secant-like manner, whereby an axial movement and a rotary movement of the piston are possible, but a rotary movement of the holding device about the longitudinal center axis of the However, recording space is prevented.
- the anti-rotation element reliably prevents the holding device from rotating itself with the magnet arranged thereon around the longitudinal central axis of the cylindrical receiving space, as a result of which the magnet is always precisely aligned with the sensor element arranged radially opposite.
- the holding device and anti-rotation element which is preferably subject to slight play, the axial pushability of the holding device together with the holding device-carrying Kol bens ensured.
- the anti-rotation element preferably has a comparatively small construction size and can be produced cost-effectively without complex machining steps and mounted in the housing of the actuating device.
- the arrangement of the anti-rotation element which is preferably subject to play, compensates for manufacturing tolerances and avoids the occurrence of temperature-related mechanical stresses during operation.
- the anti-rotation element can also be easily integrated into an existing construction using existing components. Furthermore, a reduction in wear can be realized by means of the anti-rotation element.
- the holding device has two axially aligned longitudinal ribs, that the longitudinal ribs each have a planar contact surface pointing in the direction of the anti-rotation element, and that the contact surfaces are spaced apart from one another along an imaginary secant line of the holding device.
- the flat and narrow contact surfaces of the longitudinal ribs cause only low frictional forces acting between the holding device and the anti-rotation element, which ensures smooth axial displacement of the holding device and the piston of the actuating device.
- the housing of the actuating device consists of a lower part and an upper part, which are sealed off from one another by means of a sealing element.
- the two-part design of the housing enables a simple assembly of the components of the actuating device.
- a wall of the lower part of the housing surrounding the receiving space has at least one retaining pin which is offset radially outwards and is directed axially in the direction of the upper part of the housing, that the anti-rotation tion element has at least one pocket on its side facing the lower part of the housing, and that each retaining pin is accommodated in a respective assigned pocket and rests on the front side on the bottom of the pocket.
- the at least one holding pin preferably has a cylindrical geometry and the at least one pocket preferably has a cup-shaped geometry. For example, there is a slight mechanical play between the pocket and the retaining pin.
- the anti-rotation element preferably has a trapezoidal geometry. As a result, this is simple and inexpensive to produce. In addition, this geometry ensures that the anti-rotation element is seated reliably in the lower part of the housing of the actuating device.
- a base side of the anti-rotation element pointing towards the holding device has an axially aligned radial depression, and that a radially inwardly directed contact surface is formed on the anti-rotation element on both sides next to this depression.
- the contact surfaces of the two longitudinal ribs of the holding device can be supported on these contact surfaces. This minimizes the mechanical contact surface between the anti-rotation element and the holding device, as will be explained further using an exemplary embodiment.
- the anti-rotation element is preferably arranged in a form-fitting manner within a niche-like and approximately trapezoidal recess in the wall of the hollow-cylindrical receiving space of the housing. This achieves reliable accommodation of the anti-rotation element in the side wall of the housing.
- the contact surfaces of the anti-twist element run essentially parallel to the contact surfaces of the holding device.
- the holding device and the anti-rotation element are made of the same material, whereby the occurrence of any abrasion is largely avoided.
- the sealing element is designed to be elastic and has at least two domes formed integrally on it and aligned with their longitudinal extent parallel to the longitudinal central axis. Despite the somewhat nub-like dome, reliable sealing between the gear housing and the upper part is ensured.
- the sealing element is preferably designed as a surface seal and is made from an elastomeric plastic.
- the axial length of the two domes of the sealing element is such that in the assembled state of the upper part and lower part of the housing of the actuating device, the anti-rotation element is mechanically prestressed axially against the at least one retaining pin of the lower part of the housing by means of these at least two domes is. This reliably prevents the co-movement of the anti-rotation element, in particular during axial displacement movements of the holding device.
- the actuating device can be such that the at least two domes are connected and positioned with the sealing element by means of a plurality of webs formed integrally on the sealing element. This results in a reduction in the number of parts in the actuating device and simplified manufacture and assembly of the sealing element.
- the holding device has a circular feed-through opening radially on the inside, which is delimited like a wall by an annular shoulder of the holding device.
- the piston also has an annular collar radially on the inside and remote from the piston rod, which collar extends to the underside of a screw bolt inserted through the through-opening, without reaching it. In the thereby formed annular space between the Un underside of the bolt and the collar of the piston, the annular school is arranged ter the holding device with only a small clamping force.
- an axial position of the piston within the hollow-cylindrical receiving space can be measured without contact by means of the sensor arrangement.
- the axial position mentioned is, for example, one of the two end positions and a middle position in the actuating path of the piston.
- the magnetic field-sensitive sensor is arranged radially outside of the wall surrounding the hollow-cylindrical receiving space. As a result, there is no need for a sealed hole in the wall to accommodate the magnetic field-sensitive sensor.
- FIG. 1 shows a cut perspective partial view of an actuating device according to the invention for an automated manual transmission with a holding device holding a magnet as part of a sensor arrangement and with an anti-rotation element,
- FIG. 2 shows a plan view of a lower part of a housing of the actuating device with a sealing element and of the holding device arranged within the receiving space of the housing and of the anti-rotation element according to FIG. 1,
- FIG. 3 a longitudinal section along section line AA according to FIG. 2, 4 shows a highly schematic, perspective representation of the holding device and the anti-rotation element according to FIGS. 1 to 3,
- Fig. 5 shows a cross-section along line V-V of Fig. 4,
- FIG. 6 shows a highly schematized representation of the forces acting on the holding device and on the anti-rotation element according to FIG.
- FIG. 1 shows a partially sectioned, perspective partial view of an actuating device 10 for an automated manual transmission 12 of a motor vehicle with a holding device 44 for a magnet 38, which is a component of a sensor arrangement 30.
- the actuating device 10 has a housing 18 with a lower part 22, a cover-like upper part 20 and a sealing element 28 arranged therebetween for fluid-tight sealing of the housing 18 formed with the lower part 22 and the upper part 20.
- the actuating device 10 has at least one actuator 54 designed as a piston-cylinder arrangement that can be actuated by pressure medium, by means of which actuator a shift or selector element of the manual transmission 12 can be actuated to select a shift gate or to engage or disengage a gear.
- This actuator 54 has a hollow-cylindrical receiving space 50 in the lower part 22 of the housing 18, in which a piston 58 is arranged coaxially to the longitudinal center axis 52 of the receiving space 50 se.
- the piston 58 is sealed radially on the outside by means of a circumferential piston seal 60 in a pressure-tight manner against a wall 106 surrounding the receiving space 50 .
- the piston 58 is preferably produced as a shaped sheet metal part, which is overmoulded radially on the outside with an elastomeric plastic material, for example, for the integral formation of the piston seal 60 .
- a piston rod 64 is fastened to the piston underside 62 pointing away from the upper part 20 of the housing 18 and at the free end 66 an interface 68 to the manual transmission 12 is formed.
- a selector rod can be connected and this can be actuated to select a shift gate.
- the piston rod 64 can also with be connected to a selector shaft or selector fork of the manual transmission 12, the latter being used to move a shift sleeve assigned to a transmission gear, not shown, along a transmission shaft.
- a gear change of the automated manual transmission can be initiated by actuating the shift sleeve, as is known to the person skilled in the art from DE 102016012862 A1.
- the already mentioned sensor arrangement 30 is present, which has, among other things, a magnetic field-sensitive sensor 32 and a magnet 38 which is in a non-contact operative connection with it.
- the magnetic field-sensitive sensor 32 is here, for example, a Hall sensor 40, which is connected by means of connecting lines, not shown, to electronic evaluation electronics, which are also not shown, or to a control unit.
- the magnet 38 is structurally integrated into the already mentioned holding device 44, which in this exemplary embodiment has the peripheral geometry of a hollow cylinder segment. However, it can also have the geometry of a complete hollow cylinder.
- the holding device 44 is preferably made of a plastic material.
- the magnet 38 is preferably a circular segment-shaped permanent magnet 46 which is embedded in the plastic material of the holding device 44 in one piece.
- the axial position X of the piston 58 along the longitudinal center axis 52 of the receiving space 50 and thus a current shift gate selection state or a shifting state of the manual transmission 12 can be precisely determined by means of the sensor arrangement 30 .
- the magnetic field-sensitive sensor 32 is positioned here, for example, radially opposite to the magnet 38 , the magnetic field-sensitive sensor 32 being arranged radially outside of a peripheral wall 106 of the hollow-cylindrical receiving space 50 .
- a comparatively small anti-rotation element 80 is present according to the invention, which interacts with the holding device 44 in such a way that a coaxial movement of the assembly component consisting of the piston rod 64, the Piston 58 and the holding device 44 is possible without hindrance, but a rotational movement of the holding device 44 carrying the magnet 38 is prevented with low friction.
- Fig. 2 shows an axial plan view of the lower part 22 of the housing 18 of the actuating device 10 with the sealing element 28 arranged between the upper part 20 and the lower part 22 of the housing 18, the receiving space 50 of the housing 18, the piston 58 arranged there, the on this holding device 44 fixed remotely from the piston rod so that it can be rotated and moved, and the anti-rotation locking element 80 that interacts with the holding device 44.
- the elastomeric sealing element 28 rests on the lower part 22 of the housing 18 of the actuating device 10 in a clearly recognizable manner.
- the holding device 44 is connected to the upper side of the piston 58 remote from the piston rod so that it can rotate about the central longitudinal axis 52 of the receiving space 50 and is arranged at least in sections in the receiving space 50 which is delimited by the hollow-cylindrical wall 106 of the lower part 22 .
- the holding device 44 has a first axial longitudinal rib 90 and a second axial longitudinal rib 92 , each of which has a planar contact surface 94 , 96 pointing in the direction of the anti-twist element 80 .
- the at the contact surfaces 94, 96 run geometrically along an imaginary Se edge line 98 on the holding device 44. This secant line 98 limits the un complete cylinder segment portion of the holding device 44 geometrically.
- the anti-rotation element 80 has a trapezoidal geometry only by way of example, with a base side 110 of the anti-rotation element 80 pointing in the direction of the holding device 44 having an axial direction, ie perpendicular to the plane of the drawing oriented radial depression 112, next to which a radially inwardly directed first contact surface 114 and a radially inwardly directed second contact surface 116 are formed.
- the trapezoidal anti-rotation element 80 is arranged in a niche-like and geometrically complementary to the anti-rotation element 80 or approximately trapezoidal from recess 120 in the wall 106 of the lower part 22 of the housing 18.
- the anti-rotation element 80 can be arranged in the recess 120 in a form-fitting manner or with slight play, at least in certain areas. In the case of a slightly play-prone training, there is a reduced manufacturing effort wall, since machining of the components mentioned can be omitted.
- the two contact surfaces 114, 116 of the anti-rotation element 80 are preferably arranged with at least slight play in relation to the contact surfaces 94, 96 of the two longitudinal ribs 90, 92. As a result, clamping effects are avoided between the holding device 44 , which moves coaxially to the longitudinal center axis 52 , and the anti-rotation element 80 .
- the holding device 44 and the anti-rotation element 80 are preferably made of the same material, which may be a plastic material, for example. As a result, material abrasion during operation of the actuating device is largely avoided.
- the sealing element 28 is elastic and can be made of an elastomeric plastic material, for example.
- the sealing element 28 has here only by way of example two peg-like domes 126, 128 which are integrally formed on this and are axially aligned, that is to say oriented perpendicularly to the plane of the drawing.
- the anti-rotation element 80 is clamped axially between the upper part 20 and the lower part 22 of the housing 18 of the actuating device 10 by means of the two domes 126 , 128 . This is particularly important when the anti-rotation element 80 is accommodated in the trapezoidal recess 120 with play.
- the at least two domes 126, 128 are connected in one piece to the sealing element 28 by means of a plurality of webs 130, 132, 134, 136 formed integrally on the sealing element 28 and are thereby precisely aligned.
- the holding device 44 Due to the secant line 98 of the holding device 44 in some areas anlie lowing anti-rotation element 80 any rotation of the holding device 44 is excluded. Since the holding device 44 is rotatably connected to the piston 58, the piston 58 can still rotate about its longitudinal axis or about the longitudinal center axis 52 during an axial movement necessary to engage a gear. Accordingly, the circumferential orientation shown here of the holding device 44 in relation to the sensor 32 remains unchanged under all operating conditions of the actuating device 10, as a result of which the sensor arrangement 30 can be used to precisely determine the axial position X of the piston 58 of the actuating device 10.
- FIG. 3 shows a longitudinal section along section line A-A according to FIG. 2.
- the receiving space 50 of the lower part 22 of the housing 18 of the actuating device 10 which is delimited by the wall 106 of the lower part 22 of the housing 18, can be clearly seen.
- the piston 58 is slidably accommodated in this receiving space 50 coaxially to the longitudinal center axis 52 and is guided in a sealed manner by means of the piston seal 60 embodied here as a double lip seal, for example.
- the sealing between the lower part 22 and the upper part 20 of the housing 18 is effected by means of the sealing element 28.
- the approximately hollow-cylindrical or hollow-cylindrical-segment-shaped holding device 44 with the integrated magnet 38 is arranged at least in sections in the receiving space 50 of the lower part 22 of the housing 18 and is rotatably connected about the longitudinal center axis 52 to the side of the piston 58 that is remote from the piston rod.
- the piston 58 is firmly connected to the piston rod 64 by means of a screw bolt 142 .
- the piston rod 64 has, at its free end 66 directed away from the piston underside 62, the interface 68, which is clearly visible here, for an actuating element of the manual transmission 12, not shown.
- This The actuating element is, for example, a shift rod for engaging and disengaging gears.
- the holding device 44 has a circular feed-through opening 188 radially on the inside, which is delimited like a wall by an annular shoulder 190 of the holding device 44 .
- the shoulder 190 of the holding device 44 is net angeord with only a comparatively low clamping force in an annular space between the underside of the bolt 142 and an annular collar 192 of the piston 58 .
- the collar 192 of the piston 58 is formed radially inward on the piston 58 and extends axially outward toward the underside of the stud 142 without reaching it.
- the collar 192 consists, for example, of an elastomer molded onto the metal area of the piston 58 .
- the clamping force with which the holding device 44 is held on the piston 58 is set so large that the holding device 44 is carried along by the piston 58 without play when the piston 58 moves axially, and so small that the holding device 44 is released during a rotary movement of the piston 58 is held without damage by the anti-rotation element 80, ie is prevented from rotating with very little friction.
- the receiving space 50 of the housing 18 is also clearly delimited radially here by the circumferential, essentially hollow-cylindrical wall 106 .
- the wall 106 has in the region of an axially outward or upwardly existing bottom surface 148 of said recess 120 at least one radially offset formed and axially toward the upper part 20 pointing zy-cylindrical retaining pin 150.
- the anti-rotation element 80 is accommodated on this retaining pin 150 by means of a pot-shaped pocket 152 formed and assigned on the underside of the anti-rotation element 80 and thereby secured in position, among other things.
- the anti-rotation tion element 80 by means of the at least two domes 126, 128, of which only one dome 128 is visible in FIG.
- the anti-rotation element 80 is accommodated with play in the recess 120 of the lower part 22, there is reliable positional security for the same in relation to the axial movements of the assembly formed from the piston 58, the piston rod 64 and the holding device 44 partly within the receiving space 50 coaxially to the longitudinal central axis 52. Therefore, clamping and / or tilting effects are excluded in particular between the anti-rotation element 80 and the holding device 44 for the magnet 38.
- Fig. 4 shows a highly schematic, perspective view of the holding device 44 and the anti-rotation element 80 according to Figures 1 to 3. It can also be seen here that the holding device 44 with the magnet 38 (not visible in Fig. 4) is in the receiving space 50 of the lower part 22 of the housing 18 of the actuating device 10 and can be displaced coaxially to the longitudinal central axis 52 .
- the two contact surfaces 94, 96 of the holding device 44 which lie against one another with play with the two contact surfaces 114, 116 of the anti-rotation element 80 to prevent rotation of the holding device 44, are each simplified here as planar surfaces 164, 166 running parallel to one another for reasons of clarity in the drawing shown.
- the trapezoidal anti-rotation security element 80 is here, for example, only partially positively in a trapezoidal recess 120 in the lower part 22 of the housing 18 of the actuating device 10.
- the recess 120 in the wall 106 of the lower part 22 of the housing 18 here, for example, has two facing projections 160, 162 which are oriented towards the holding device 44 Plane surface 166 of the anti-rotation element 80 overlap laterally.
- the anti-rotation element 80 cannot move parallel to the upper side 168 of the lower part 22 of the housing 18; on the contrary, it is accommodated largely in a form-fitting manner in the recess 120 mentioned.
- Fig. 5 illustrates a simplified cross section along section line VV according to Fig. 4.
- the folding device 44 with the magnet 38 is in the receiving space 50 of the lower part 22 of the housing 18 axially to the longitudinal center axis 52 or coaxially to the direction of the second double arrow 174 taken.
- the receiving space 50 is closed by the upper part 20 of the housing 18 .
- the anti-rotation element 80 is accommodated here with play and can thus be displaced at least slightly parallel to the upper side 168 of the lower part 22 of the housing 18 .
- the torsion-proof element 80 is clamped axially between the upper part 20 and the bottom surface 148 of the recess 120 in the lower part 22 of the housing 18 with the aid of the cone-shaped dome 128 that is only visible here as part of the sealing element 28 . This ensures that the anti-rotation element 80 is positioned reliably in the recess 120 even when the folding device 44 moves axially within the receiving space 50 .
- FIG. 6 shows a highly schematized representation of the forces acting on the folding device 44 and the anti-rotation element 80 according to FIG.
- the anti-rotation element 80 which is arranged here with play, is arranged between the upper part 20 and the lower part 22 of the housing 18 and is clamped axially by means of the only visible dome 128 of the sealing element 28 .
- the folding device 44 with the magnet 38 arranged on it or completely encapsulated with plastic strives to rotate together with the piston 58 and the piston rod 64 against the action of the anti-rotation element 80 about the longitudinal central axis 52 according to the rotation arrow 180.
- the folding device 44 as indicated by the third double-headed arrow 182, carries out axial movements coaxially to the longitudinal central axis 52.
- first contact point Pi in the area of which the first sliding friction mi prevails.
- second contact point P between the dome 128 and the anti-rotation element 80 , with a second sliding friction m 2 prevailing in this area between the dome 128 and the anti-rotation element 80 .
- support point PA between the anti-rotation element 80 and the lower part 22 of the housing 18, about which the anti-rotation element 80 could tilt.
- the holding device 44 Upon contact with the anti-rotation element 80, the holding device 44 acts on the anti-rotation element 80 with a horizontal force Fi oriented perpendicularly to the longitudinal center axis 52, as a result of which an opposite and equal counterforce F acts at the first contact point Pi.
- the upper part 20 of the housing 18 presses with a normal force Nc acting parallel to the longitudinal central axis 52 on the dome 128 of the sealing element 28, which causes there an equal and oppositely directed normal reaction force Rci.
- a compressive force Rc2 is imparted via the dome 128 of the sealing element 28, which acts perpendicularly on the anti-rotation element 80 at point P 2 and which is equal to the normal force N c in terms of its amount.
- first lever length a between the first contact point Pi and the second contact point P 2
- second lever length b extends between the second contact point P and support point PA.
- the inequality F x * (a + b) ⁇ Rc2 * b must be satisfied.
- a torque formed from the product of the tilting force F x and the sum of the two lever lengths a + b must always be smaller than the torque from the product of the compressive force Rc2 or the normal force Nc with the second lever length b.
- the compressive force Rc2 built up by the dome 128, the upper part 20 and the lower part 22 of the housing 18 and acting on the anti-rotation element 80 must always be greater than the tilting force F x .
- Compliance with the inequality can essentially be ensured by appropriate material selection for setting the two sliding frictions mi , m 2 , by selecting an elastomeric plastic with suitable elasticity for the at least one dome 128 and by appropriate axial mechanical clamping or prestressing of the dome 128 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gear-Shifting Mechanisms (AREA)
- Actuator (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020118052.7A DE102020118052A1 (de) | 2020-07-08 | 2020-07-08 | Betätigungsvorrichtung für ein automatisiertes Schaltgetriebe |
| PCT/EP2021/068562 WO2022008467A1 (de) | 2020-07-08 | 2021-07-06 | Betätigungsvorrichtung für ein automatisiertes schaltgetriebe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4179233A1 true EP4179233A1 (de) | 2023-05-17 |
| EP4179233B1 EP4179233B1 (de) | 2024-05-22 |
Family
ID=76958953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21742781.4A Active EP4179233B1 (de) | 2020-07-08 | 2021-07-06 | Betätigungsvorrichtung für ein automatisiertes schaltgetriebe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12092208B2 (de) |
| EP (1) | EP4179233B1 (de) |
| CN (1) | CN115836174B (de) |
| DE (1) | DE102020118052A1 (de) |
| WO (1) | WO2022008467A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4663980A1 (de) | 2024-06-12 | 2025-12-17 | ZF CV Systems Global GmbH | Dichtung für eine dichtungsanordnung für ein automatisiertes schaltgetriebe für ein fahrzeug, insbesondere nutzfahrzeug, dichtungsanordnung, automatisiertes schaltgetriebe, fahrzeug |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1602544B1 (de) | 2004-06-04 | 2011-01-05 | ZF Friedrichshafen AG | Hydraulikzylinder |
| DE102004031314A1 (de) | 2004-06-29 | 2006-01-19 | Robert Bosch Gmbh | Gehäuseteil für eine Antriebseinheit, sowie Verfahren und Werkzeug zur Herstellung eines solchen |
| US8635925B2 (en) * | 2004-11-22 | 2014-01-28 | Eaton Corporation | Transmission auxiliary unit shift inhibitor |
| DE202005006878U1 (de) | 2005-04-29 | 2006-08-31 | Webasto Ag | Vorrichtung zum Dichten und Dämpfen |
| DE102005034865B4 (de) | 2005-07-26 | 2012-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Stellvorrichtung für ein Getriebe |
| CN202708037U (zh) | 2012-06-27 | 2013-01-30 | 陕西法士特齿轮有限责任公司 | 一种新型副箱三位置气缸执行机构 |
| DE102014011177A1 (de) | 2014-07-31 | 2016-02-04 | Fte Automotive Gmbh | Hydraulische oder pneumatische Betätigungsvorrichtung für die Betätigung von Stellgliedern in einem Kraftfahrzeuggetriebe |
| DE102015116654B4 (de) | 2015-10-01 | 2021-12-02 | Hugo Benzing Gmbh & Co. Kg | Parksperreneinheit |
| DE102016012862A1 (de) | 2016-10-27 | 2018-05-03 | Wabco Gmbh | Schaltmodul eines automatisierten Schaltgetriebes |
| DE102017009670A1 (de) * | 2017-10-13 | 2019-04-18 | Fte Automotive Gmbh | Stellvorrichtung für die Betätigung einer Schaltstange eines Schaltgetriebes |
| DE102018003749B4 (de) | 2018-05-09 | 2022-04-28 | Fte Automotive Gmbh | Parksperrenmodul zur Betätigung einer Parksperre in einem Kraftfahrzeug |
| DE102018003751B4 (de) | 2018-05-09 | 2024-05-29 | Valeo Powertrain Gmbh | Parksperrenmodul zur Betätigung einer Parksperre in einem Kraftfahrzeug |
-
2020
- 2020-07-08 DE DE102020118052.7A patent/DE102020118052A1/de not_active Withdrawn
-
2021
- 2021-07-06 EP EP21742781.4A patent/EP4179233B1/de active Active
- 2021-07-06 CN CN202180047912.2A patent/CN115836174B/zh active Active
- 2021-07-06 WO PCT/EP2021/068562 patent/WO2022008467A1/de not_active Ceased
- 2021-07-06 US US18/014,366 patent/US12092208B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US12092208B2 (en) | 2024-09-17 |
| CN115836174A (zh) | 2023-03-21 |
| US20230258263A1 (en) | 2023-08-17 |
| CN115836174B (zh) | 2026-02-27 |
| WO2022008467A1 (de) | 2022-01-13 |
| EP4179233B1 (de) | 2024-05-22 |
| DE102020118052A1 (de) | 2022-01-13 |
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